PRODUCT LINE QUICK REFERENCE - Magnetrol International

THERMATEL ® TG1/TG2
Thermal dispersion switch
THERMAL DISPERSION
DESCRIPTION
Thermatel ® TG1/TG2 switches consist of electronics in a DIN rail housing and a remote
sensor with aluminium or stainless steel sensor housing (max 500 m (1640 ft) away from
electronics).
TG1/TG2 switches can easily be adjusted to detect flow (gases and liquids), level or liquidliquid
interface. Both units are 2-wire 24 V DC powered and intrinsically safe approved.
The TG1 offers standard LED flow indication, the TG2 offers LED flow indication per
NAMUR NE 44.
FEATURES
Temperature compensation
Easy field calibration – pre-calibration from factory on request.
Variable flow or flow / no flow detection of gases and liquids.
Excellent low flow sensitivity.
Automatic temperature compensation for repeatable alarm under varying process temperatures.
Continuous diagnostics detect sensor fault.
Continuous monitoring of flow rate versus setpoint via LED.
mA output provides repeatable indication of flow rate and fault detection.
Optional retractable fitting for dismantling under process conditions.
Process conditions up to +450 °C (+850 °F) and 413 bar (6000 psi).
Suited for SIL1 and SIL2 loops (full FMEDA report available).
APPLICATIONS
MEDIA: All types of gases and liquids.
VESSELS: Pipe sizes down to 1 /4". Max sensor length up to 3,3 m. Can be installed at any
angle vertically/horizontally.
CONDITIONS: Can be used on conductive and non conductive media, very light density
to heavy viscous media (up to 10.000 cP). Can be set to ignore foam, aeration, turbulence,
and cavitation.
AGENCY APPROVALS
ATEX II (I) / 1 G Ex ia IIB T5 Ga
Russian Authorisation Standards
Other approvals are available, consult factory for more details.
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